From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+ad1b592fc4483655438b@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [mm?] KASAN: slab-use-after-free Read in __vma_reservation_common
Date: Sun, 14 Apr 2024 11:31:19 +0800 [thread overview]
Message-ID: <20240414033119.2079-1-hdanton@sina.com> (raw)
In-Reply-To: <000000000000ae5d410615fea3bf@google.com>
On Sat, 13 Apr 2024 11:34:32 -0700
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: 9ed46da14b9b Add linux-next specific files for 20240412
> git tree: linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=12bd4457180000
> kernel config: https://syzkaller.appspot.com/x/.config?x=7ea0abc478c49859
> dashboard link: https://syzkaller.appspot.com/bug?extid=ad1b592fc4483655438b
> compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1370ea67180000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git 9ed46da14b9b
--- x/arch/x86/mm/fault.c
+++ y/arch/x86/mm/fault.c
@@ -1353,8 +1353,7 @@ void do_user_addr_fault(struct pt_regs *
}
#endif
- if (!(flags & FAULT_FLAG_USER))
- goto lock_mmap;
+ goto lock_mmap;
vma = lock_vma_under_rcu(mm, address);
if (!vma)
--
next prev parent reply other threads:[~2024-04-14 3:31 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-12 13:32 syzbot
2024-04-13 18:34 ` syzbot
2024-04-13 23:33 ` Hillf Danton
2024-04-14 2:39 ` syzbot
2024-04-14 3:31 ` Hillf Danton [this message]
2024-04-14 4:02 ` syzbot
2024-04-15 22:05 ` Vishal Moola
2024-04-15 22:15 ` Matthew Wilcox
2024-04-15 23:02 ` Vishal Moola
2024-04-16 4:35 ` Matthew Wilcox
2024-04-16 5:36 ` Oscar Salvador
2024-04-16 8:13 ` Oscar Salvador
2024-04-17 21:31 ` Andrew Morton
2024-04-16 7:28 ` syzbot
2024-04-18 18:40 ` Vishal Moola
2024-04-18 18:40 ` syzbot
2024-04-18 18:45 ` Vishal Moola
2024-04-19 5:01 ` syzbot
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